Home / 2,640.83-3,961.24-1,081.56

Finding the Fourth Proportional to 2,640.83, 3,961.24 and 1,081.56

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Solution

The fourth proportional to 2,640.83, 3,961.24 and 1,081.56 is: 1,622.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640.83 : 3,961.24 = 1,081.56 : x
  2. Step 2: Convert to fraction form
    2,640.83/3,961.24 = 1,081.56/x
  3. Step 3: Cross multiply
    2,640.83x = 3,961.24 × 1,081.56
  4. Step 4: Simplify right side
    2,640.83x = 4,284,318.73
  5. Step 5: Solve for x
    x = 4,284,318.73/2,640.83
  6. Step 6: Final answer
    x = 1,622.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.